<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
        "http://www.w3.org/TR/html4/loose.dtd">
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head>
    <meta content="" charset=UTF-8>
    <title>修改</title>
</head>
<body>
    <form action="/student/update_do" method="post">
        <input type="hidden" name="sid"  th:value="${stu.sid}">
        <input type="text" name="sname" placeholder="姓名" th:value="${stu.sname}"> <br/>
        <input type="text" name="gender" placeholder="性别"  th:value="${stu.gender}"><br/>
        <input type="text" name="age" placeholder="年龄"  th:value="${stu.age}"><br/>
        <input type="submit" value="更新">
    </form>
</body>
</html>